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Write the name of two monosaccharides obtained on hydrolysis of lactose sugar.
Concept: Biomolecules in the Cell > Carbohydrates >> Monosaccahrides
Which one of the following is a disaccharide : Starch, Maltose, Fructose, Glucose ?
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides
Answer the following question.
Write the products obtained after the hydrolysis of lactose.
Concept: Biomolecules in the Cell > Carbohydrates >> Disaccharides
What are the hydrolysis products of sucrose?
Concept: Classification of Carbohydrates
Write the products of the following reactions:
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides
Write the products of the following reactions:
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides
Write the products of the following reactions:
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides
The following questions are case-based questions. Read the passage carefully and answer the questions that follow:
| Carbohydrates are optically active polyhydroxy aldehydes and ketones. They are also called saccharides. All those carbohydrates which reduce Fehling's solution and Tollen's reagent are referred to as reducing sugars. Glucose, the most important source of energy for mammals, is obtained by the hydrolysis of starch. Vitamins are accessory food factors required in the diet. Proteins are the polymers of α-amino acids and perform various structural and dynamic functions in the organisms. Deficiency of vitamins leads to many diseases. |
Answer the following:
(a) The penta-acetate of glucose does not react with Hydroxylamine. What does it indicate? (1)
(b) Why cannot vitamin C be stored in our body? (1)
(c) Define the following as related to proteins: (2)
- Peptide linkage
- Denaturation
OR
(c) Define the following as related to carbohydrates: (2)
- Anomers
- Glycosidic linkage
Concept: Classification of Carbohydrates
Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?
Concept: Biomolecules in the Cell > Carbohydrates >> Structures of Glucose
Give a reason for the following observations:
Penta-acetate of glucose does not react with hydroxylamine.
Concept: Biomolecules in the Cell > Carbohydrates >> Structures of Glucose
Give a reason for the following observations:
Water soluble vitamins must be taken regularly in the diet.
Concept: Biomolecules in the Cell > Vitamins >> Classification of Vitamins
What is the role of t-butyl peroxide in the polymerization of ethene?
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
Write the mechanism of free radical polymerization of ethene.
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
Write the names and structure of the monomers of the following polymers:
Nylon-6, 6
Concept: Types of Polymerisation Reactions - Condensation Polymerisation Or Step Growth Polymerisation
Write the names of monomers used for getting the following polymer:
Neoprene
Concept: Introduction to Polymers >> Classification of Polymers Based on Molecular Forces
Write the names of monomers used for getting the following polymer:
Teflon
Concept: Introduction to Polymers >> Classification of Polymers Based on Structure
After the ban on plastic bags, students of a school decided to make people aware of the harmful effects of plastic bags on the environment and Yamuna River. To make the awareness more impactful, they organised a rally by partnering with other schools and distributed paper bags to vegetable vendors, shopkeepers and departmental stores. All the students pledged not to use polythene bags in the future to save the Yamuna River.
After reading the above passage, answer the following questions:
(i) What values are shown by the students?
(ii) What are bio-degradable polymers? Give one example.
(iii) Is polythene a condensation or an addition polymer?
Concept: Molecular Mass of Polymers
Write the structure of the monomer used in the following polymer:
Buna-S
Concept: Types of Polymerisation Reactions - Rubber
Write the structures of monomers used the following polymers:
Glyptal
Concept: Polymers of Commercial Importance
Define Broad-spectrum antibiotics with a suitable example?
Concept: Classification of Drugs
